Ceiling construction



Sept. 14, 1937. c. F. DAVIS CEILING CONSTRUCTION Filed Aug 27 L935 INVENTOR.

ATTORNEY.

Patented Sept. 14, 1937 UNITED STATES PATENT OFFICE CEILING CONSTRUCTION Application August 27, 1935, Serial No. 38,022

3 Claims.

The present application constitutes a continuation in part of co-pending application 655,591. The present invention relates to a building construction in which the ceiling elements are hung in a certain manner from an overhead support which may be specifically a floor system.

Patent 1,854,396 discloses an elongated slab of gypsum or the like having metal elements at opposite edges correspondingly tongued and grooved. Slabs embodying that invention have come into wide use in the building trade for the manufacture of floors and roof decks. The present invention is particularly applicable to a floor or roof deck constructed of units made according to that patent, although not necessarily limited thereto.

The invention specifically contemplates an overhead support which may be a floor .system as above described but which in any event shall include adjacent individual units, the joint between which is interrupted, such, for instance, as by a tongue and groove. A ceiling of any desired type but composed of individual units is hung from the overhead support by means including a device pinched or held between the joint formed by the abutting units of the above deck system.

The advantages of such a ceiling system are apparent when it is considered that no additional supporting system is required other than the upper decking itself. This eliminates the necessity for dropped furring channels, rods or the like ordinarily found necessary which are expensive and cumbersome and make it diflicult to obtain a perfectly flat and uniformly level ceiling system.

Other advantages will be apparent as the description proceeds with reference to the accompanying drawing,.which is to be taken as illustrative of the invention only:

Fig. 1 is a. fragmentary perspective view showing the method of hanging of a ceiling system;

Fig. 2 is a sectional view through abutting decking members showing the method of hanging a ceiling slab;

Fig. 3 is a partial side elevation through the hanging element of Fig. 1.

Referring now with particularity to the embodiment illustrated, a ceiling slab is shown at I of any desired construction having partially embedded therein a member 2 preferably of metal perforated as at 3 and to which the train of hanging means may be attached. The particular type of ceiling slabs is not important in practicing this invention, it only being necessary that such a slab should be provided with means to which a hanging element or elements may bL attached.

A decking system is indicated generally in Fig. 1 where 4 represents one of the slabs going to make up the same. These slabs are provided on one edge with a metal member 5 having a tongue 5. In Fig. 2 the abutting slab is indicated at I also having a metal member 5 with a corresponding groove 8 adapted to snugly fit the tongue 6 on the metal member of the slab 4.

In order to hang the ceiling slabs from the decking system, a plate 9 is provided having a portion Ill corresponding closely to the tongue 6 and the groove 8 so as to be capable of being pinched or held between those parts as is clearly shown in Fig. 2. The lower portion of the plate 9 extends as at H below the lower edge of the slab 4 and is provided with perforations l2 adapted to receive a hook element I3 which also engages one of the perforations in the member 2 in a ceiling slab I. Where desired, nails It may be used to positively secure the plate 9 to a slab 4 during erection, although, of course, it is to be understood that such auxiliary holding means are not required inasmuch as the two deck slabs are placed in abutting relationship.

Any desired number of plates 9 may be used depending upon the width and/or length of the ceiling units so that such units may be picked up at desirable points of their length. The width of the plate 9 below the decking should preferably be such that it may accommodate several perforations. This makes it possible to apply the hook member l3 into that perforation nearest to the member 2 in the ceiling slab beneath the same without requiring a too accurate location of the plates before putting the ceiling in place.

The plates themselves are preferably of metal although they need not be very heavy as it has been found that a light gauge cold rolled metal is eminently satisfactory for the purpose.

I claim:

1. A building construction including an overhead two-part support comprising two complementary members adjacent each other, the joint therebetween being interrupted, ceiling members below said two-part support, and ceiling supporting means held by and between the interrupted joint in the two-part support and connected with said ceiling slab in which the twopart support consists of two precast slabs with their adjacent edges covered with complementarily tongued and grooved metal members.

2. A building construction including an over-,

head two-part support comprising two complementary members adjacent each other, the Joint therebetween being interrupted, ceiling members below said two-part support, and ceiling supporting means held by and between the Joint in the two-part support and connected with said ceiling slab in which the two-part support consists of two precast slabs with their adjacent edges covered with complementarily tongued and .grooved metal members and the ceiling supporting means consists of a plate engaging the said tongue and groove.

3. The combination in a floor made up of matched units, each having a tongue and groove engagement with the adjoining units, oi sheet metal webs, one for each' such unit and having flanges turned from their upper edges and conforming to the tongue and grooves of said units, each pair of abutting units receiving between them and clamping the upper edge of one only or said webs, the flanges oi the clamped webs entering and being held between the tongues and grooves of abutting units, said webs extending downwardly below said units. and a flat member substantially parallel with said units underlying said webs and to which the lower edges oi said webs are secured.

- CLARKE 1". DAVIS. 

